FIELD: transportation.
SUBSTANCE: invention relates mainly to automotive industry. The steel cord comprises the core formed as a result of combining of two core fibers in parallel without mutual twisting of fibers, and six fibers of the shell twisted around the core. At setting the diameter of the core fiber dc (mm), diameter of the shell fiber ds (mm) and the step of the shell fiber twisting p (mm) the average interval of the shell fiber D which is described by the following formula (I): D = [L-6ds{1+(L/p2}1/2]/6 (I), where L=(π+2)dc+πds) is within the range from 25 up to 80 microns.
EFFECT: decrease of tire cover weight without loss of its strength.
32 cl, 7 dwg, 18 tbl
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